If you have to place a bet between the 130lbs average Aikido black belt in the U.S. vs the 275lbs. Irish Brawler, then go with the Irish Brawler to beat the hell out of the average Aikido black belt in the U.S.
The Irish Brawler has tested his tactics many times in actual combat. The sad truth is that the average Aikido black belt has never even been in a real fight.
Everyone knows what they are going to do if they have to fight, then they get punched in the face.
This is a good reason to keep the challenge match in present day dojos.